// Copyright [2011] [Geist Software Labs Inc.]
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.


__kernel void clNormalize(__read_only image2d_t srce, __write_only image2d_t dest)
{
    const sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE | CLK_FILTER_NEAREST | CLK_ADDRESS_CLAMP;
    int x = get_global_id(0);
    int y = get_global_id(1);
    int2 idx = (int2)(x,y);
    write_imagef(dest, idx, normalize(read_imagef(srce, sampler, idx)));
}

__kernel void clXor(__read_only image2d_t srce, __write_only image2d_t dest, float4 iMask)
{
    const sampler_t srceSampler = CLK_NORMALIZED_COORDS_FALSE | CLK_FILTER_NEAREST | CLK_ADDRESS_CLAMP;
    int x = get_global_id(0);
    int y = get_global_id(1);
    float4 RGBA = read_imagef(srce, srceSampler, (int2)(x,y));

    write_imagef(dest, (int2)(x,y), RGBA*iMask+(1.0-iMask));
}
